Intrinsically Stretchable Floating Gate Memory Transistors for Data Storage of Electronic Skin Devices

Area of Science:

• Materials Science
• Electronics
• Biotechnology

Background:

• Electronic skin (e-skin) requires advanced sensory capabilities and AI integration.
• Stretchable memory devices are crucial for e-skin but are underdeveloped.
• Secure, long-term data storage under deformation is a key challenge.

Purpose of the Study:

• To develop a novel intrinsically stretchable memory transistor for e-skin.
• To enable secure, long-term data storage in deformable electronic systems.
• To enhance the functionality and data handling capabilities of e-skin.

Main Methods:

• Fabrication of an intrinsically stretchable floating gate (FG) polymer memory transistor.
• Implementation of a dual-stimuli (optical and electrical) writing system.
• Characterization of memory performance, mechanical durability, and environmental stability.

Main Results:

• Achieved high memory on/off ratio (>10^5) and long retention time (10^6 s).
• Demonstrated device stability under 50% uniaxial and 30% biaxial strain.
• Exhibited high mechanical durability (1000 cycles) and environmental stability.
• Successfully fabricated and demonstrated a 7x7 active-matrix memory transistor array.

Conclusions:

• The developed stretchable memory transistor is suitable for advanced e-skin applications.
• The device provides a robust solution for secure, long-term data storage in deformable electronics.
• This technology paves the way for personalized data storage in future e-skin systems.